Feed-water regulator



y ,1929. H. A. w. PETERSEN 1, ,5 9

' FEED WATER REGULATOR Filed March 12, 1923 Patented May 28,1929. I I

umrsn STATE 5,

HEINRICH, A. w. PETERSEN, or GARY, INDIAN FEED-WATER REGULATOR.

- 1 Application filed March 12, 1923. Serial No. 624,457.

My invention relates to regulators for boiler feeds andhas for itsprimary object the provision of a regulator which :is efiicient,

economically manufactured, easily installed,

and certain in operation.

Another object of the invention is to provide a regulator havingpressure equalizing valves controlled by a balanced arm-on which ismounted a hollow member in communication with the boiler, whereby theweight of the hollow member maybe varied by automatically changing thecontentsthereof by the 1 height of the water in the boiler.

A further object of the invention is to provide a regulator having ,ahollow member communicating with the boiler and operative by,differences in weight therein for controllingthe flow of waterto theboiler.

, A still further obj ectof the invention is to improve feed waterregulators for generally successful commercial use.

tion will be apparent from the following specification and drawings andwill be particularly pointed out in the appended claims.

In the drawings, Fig. l isan'enlarged vertical sectional view of theprefcrredeinbodiment of the invention, and r Fig. 2 is a fragmentaryportion of a boiler showing the header and a glass with which myinventionis used. 1 V In Fig. 1 I have shown a chambered casing formedof top and bottom castings 5and 6, which have flanges 7 and 8, throughwhich are passed bolts 9 and other fast ening means for, securingthesemembers in operative relation. The lower casting 6 ly disposed bridge 15in which is screw threaded a valveseat 16 with which a valve17 00-operates for controlling theflow of liquid is provided with aninlet 10and an outlet 11. Y

These have flanges 12, 13in which are provided bolt holes 14 atsuitableintervals, whereby the flanges may be secured to water pipes. It

willbe noted that the axes ofthe inlet: and

outlet openings are in alignment and in the drawings are shown ashorizontally disposed.

T he casting 6 is provided with a horizontalvfrom the inlet lO'to theoutlet 11. .Wh'en installed for feedwater regulation, the inlet 10 isconnected by means ofsuitable pipe fittings to a; pump and the outlet 11to the boiler. ,I prefer to mount my regulator above the boiler. The topcasting 5 has a threaded collar 18 therein,in the bottomof whichisthreadeda Valve seatemember 19, and, in the top spindle 29. The aboveand other objects of the invenof which is threaded an other valve seatmem v ber 20, the valve seats being indicated at 19 and- 20?,respectively. I provide a cup-like partition member 21,,which isinterposed between the flanges 7 and 8' when the top and bottom castings5 and 6 are secured together.

For making a water tight connection the low er face of the flange 7 isformed with an annular tongue 22 and the face of the flange 8 with acorresponding recess 23, the member 21 being provided with a'recess 24for receiving the tongue 22 and a tongue25 forentering' the recess 23.The transverse or bottom portion of the member21 is provided with acentrallydisposed circular opening '26 vtherethrough which is of arelatively greater diameter than the diameter of the spindle 29hereinafter described. This permits the fluid or water to flow above thebottom portion of the member 21- regardless of the position of the Thevalve which is adaptedto-enter a correspondingly shaped recess 28inthe-lower end of the stem spindle 29. A. set screw 30 is provided forengaging end 31 of the, portion'27 for removably securing the valvein-position in the spindle. ,I/Vhen the valve and spindle'are'inposition with the valve 17 at rest against the.

seat '16; theupperend of the spindle 29 is arranged to stop short ofthebottom 2l 'of the partition member. The fiupper end of the spindle isprovided with a central bore 31 for receiving-a cylindrical boss32-attached'to 17 has a threadedportion 27 ative abovethe partitionmember. The piston comprisestop and bottom circular plates 33 and. 34separatedby a filler 35 and fastened together by screw threaded members36. If

desirable, the lower plate 34 and the filler35 may be made integral. Thediameter of the filler .35fisless than the diameter of the plates 33 and34.- A packing 36 is-inserted around the periphery'of the member-35 toprevent a horizontalportion 38,. wher'eby liquid may pass from onesideto'the other of the piston I the passage of liquid'by the piston head.The boss32 has a by-pass formedthereinconsist-- ing of averticallyextending portion 37 and V tionof the plug 40.' The plugs 40 and 43 areprovidedwith centrally disposed openings 44 and 45 whereby a spindle 46is permitted to pass. The lower end of the spindle carries valve members47, 48 which seat against seats 19 and 20 under certainconditions.Between the members 19 and 20 a passageway 49 is provided having athreaded end 50 withwhich a pipe, not shown, may be connected and willlead 'to the boiler for relief purposes. The upper chamber, that is, theone formed between the partition member 21 and the valve seat member 19has an upwardly directed passageway 51"ter1nina't ing in a horizontallydisposed annular passage 52 between the seat member 20 and the plug 40.This is also for the purpose of relielf. I a

Cast integrally with the top casting 5 is an upright member 53 having apivot 54 at its upper end on which is pivotedan arm 55. In'thearrangement shown the arm 55 is horizontally disposed. "A jaw 56 isconnected by means of a pin 57 with the arm 55 and by means ot a nut '58is connected to the upper end of the spindle 46 carrying the valves '47and 48 for movement of the same under certain conditions. The arm 55arranged with relation to the pivot so that a shorter end, that is, theend nearer the pivot, pro vided with a sliding weight 59 which by meansofa set. screw 60 may be secured in selected position along this end ofthe arm for adjustment purposes. The other end of the arm is provided.with forked members 61 which areprovidcd with elongated openings 2 ineach of which openings is a pivot 63 secured to a band 64 surrounding ahollow member 65. The 1nen'1ber65 may be substantially cylindrical'asshown or may be circular in outline. At the lower end ofthe member 65 isa connecting nipple 66 and at the upper end is a similar connectingnipple 67.

The boiler shown in Fig. 2 has laterally ex tending leads 68, 69 incommunication with the water space ot'the boiler and which leads enter aheader 70. The water 71' is in communication with the header 'TO'by coninections 72, The 7 1 andthe header are so arranged that the height ofthe water in the glass will bethe same as in the header.'Leadingoutwardly from the middle portion of the header T0 is a flexiblepipe, preferably of-copper, 74 and which is connected to the threadednipple 67 of the hollow member 65. A bend 75 may be inter i posed in thepipe for purposes ofllexihility.

A similar pipe is connected with the lower connecting nipple66 ot'thehollow member '65 and lea ds into the boiler at 76.

The operation of the device is as follows The arrangement of the valvesshown in Fig. 1 isthat when the valves are closed and no water isflowing to the boiler. The pipe 74 conducts steanito the interior otthemempressure. lower chamber-it bears against the undersurber 65 throughthe nipplefi? when'the water level in the boiler is below the top of theconnect-ion between the pipe 74 in the header 70. This steam condensesslightly and is returned to the boiler through the nipple 66 and thepipe 76. The parts are so arranged that when the Water level is belowthe high levelthe weight 59 will raise the hollow member 65 raising thevalves 47 and 48 from their sea 19 and 20. The water or other liquid on'the inlet side 10 of the regulator is under Therefore as the waterenters the face of the lower plate 34 of the pistonby reason of theopening 26 through the partition member 21 and 'someotthe water passesthrough the by-pass 37 and 38 to the upper side of the piston. Thepressure against the lower side of the piston tends to raise the valve17 from itsseat 16, whereupon liquid flows from the inlet 10 through theoutlet ll through a feed line (not shown) to the boiler. As the waterfills the lower chamber and tends to raise the piston, some of it willpass to "the upper side of the piston through the by-pass andglill thespace in the upper. chamber and will also till the annular space 52,with some of the" water passing to theboil'er through the space 49 andits associated connections. By reason of the pressure of the incomingliquid there will be a greater pressure on the underside of the pistonthan on thetop, ten dingto raise the piston to its maximum limit owingto the fact that the pump pressure is normally greaterthan the boilerpressure. For limiting the upward movement of't'he piston a lrey 77 isprovided passing through the spindle 29 and the boss 32 and projectinglaterally of the spindle so asto bear against the under side of theportion 21' ott'he partition. The key is retained against movement bycotter pins 78 or other suitable fastening means. As the pressure on theupper-and lower sides or thepiston tends to become equalized the p1stonwill approach a state of equilibrium 7 and therefore will be subject toany slight variation in pressure on either side. The device ispreferably so arranged that the weight 59 balances the member 65 when itis hall full of water. As long as the water level in the boiler isbelowthe-predetermined high level, which is that indicated at 79,-inFig. 2,stea1n will pass through the pipe 74 "tothe hollow member 65, becondensedand returnedto the boiler. As soon as the water reaches theline 79admissionof steamto the hollow member 35 will be cut off andwater will therefore flow throughthe pipe 74 into tlreliollow member 65loy reason of the vacuum created by the the piston and equalizes thepressure on both sides of the piston. Hence, as the water from the inlet10 continues to enter the'lower cham her it will pass to the upper sideof the piston through the by-passes 37 and 88 until the valve 17 isseated. \Vhen equalization of pressure on both sides of the piston hastaken place, the kinetic energy of the fluid, assisted by theweight ofthe valve, valve stem and piston, causes the closing of the valve 17.This condition prevails until the water level falls below the line 79whereupon the steam is again admitted to the hollow member 65 and thewater contained therein will drain back into the boiler through thenipple 66 and connecting pipe76 by reason of the member 65 beingpositioned above-the water level in the boiler. As soon as the member 65is free of water it is raised by the action of the weight 59 opening thevalves 17 and48'thereby reducing the pressure in the chamber above thepiston to that of the boiler pressure, permitting the piston to beraised again by the pressure of the water coming in from the inletside10 and the outlet side 11'. It will also be further noted that theweight of the piston together with the valve 17 assists in seating thevalve 17 on the seat 16 when the pressure is piston.

\Vhat I claim is:

1. In a valve of the classdescribed, incombination, a casing dividedinto two chan bers by a partition arranged transversely thereof, saidpartition having a centrally disposed opening therethrough, said lowerchamber having inlet and outlet openings therein, and a valve seat, avalve co-operatequalized on both sides of the ing with said seat andremovably connected to a stem, a piston in said upper chamber having aprojection passing through said partition and removably connected tosaid valve stem, a relief device above said piston comprising a balancedvalve having two valve members connected together, valve seats therefor,said seats being apertured and communicating with a passageway to theboiler, and means responsive to the height of water in the boiler foractuating said relief device to control the operation of said mainvalve.

2. A feed water regulator including a chambered casing,a verticallymovable valve and valve stem therein, an apertured partition acrosssaidchamber through which-said stein passes, a piston on said. steinabove said partition, said stem and piston being pro- 7 vided with anopening ftorm ng a bypass,-

a relief valve operatively arranged in the upper part of the casing forvertical movementtherein, means for moving said relief valve including ahorizontally disposed arm pivotally mounted on said casing andoperatively associated with the stem of said valve, a hollow member atone end of said arm, and a counter-weight near the other end thereof,and communicating, means between said hollow member and the boilerwhereby a liquid or a vapor may be deliveredto the former as conditionsin the latter change.

'3. In a device of the class described, a valve casing, a valve seattherein, a valve for said seat removably carried by a stem, a

piston atthe other end of the stem reinova'bly associated therewith, akey passing through said stem for securing said piston thereto, anapertured partition in said casing dis- 7 posed between the piston andthe key, and a.

relief device'a bove said piston including a balanced valve operative bythe height of the water in the boiler.

In testimony whereof I have signed n1 name to this specification on this6th day of March A. D. 1923.

HEIhlRICI-I A. W. PETERSEN.

